Were talking a battery here, not a nuclear device. Charge it how you want to charge it. I have never taken the time to cut the power to a phone after hitting 80% and never had a real batter problem will my Moto Z-Force and that was most likely due to it sat, connected to a cord, on a stand for almost two years acting as a clock in one of my rooms. I checked it out and the battery had pretty much deteriorated so I replace it. Approx. thirty bucks and an hour at the table. Back living life as a clock again, but could also be used as a phone.
My Pixel 4XL has been either connected to a cord or placed on a wireless charging stand and left to charge overnight since I received it almost two years ago; battery is till going strong...